Finding the Fourth Proportional to 138,163.95, 207,333.14 and 79,114.95
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Solution
The fourth proportional to 138,163.95, 207,333.14 and 79,114.95 is: 118,722.36
Step by Step Solution
- Step 1: Write the proportion equation
138,163.95 : 207,333.14 = 79,114.95 : x - Step 2: Convert to fraction form
138,163.95/207,333.14 = 79,114.95/x - Step 3: Cross multiply
138,163.95x = 207,333.14 × 79,114.95 - Step 4: Simplify right side
138,163.95x = 16,403,150,608.87 - Step 5: Solve for x
x = 16,403,150,608.87/138,163.95 - Step 6: Final answer
x = 118,722.36
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.